/*
 * Based on arch/arm/kernel/irq.c
 *
 * Copyright (C) 1992 Linus Torvalds
 * Modifications for ARM processor Copyright (C) 1995-2000 Russell King.
 * Support for Dynamic Tick Timer Copyright (C) 2004-2005 Nokia Corporation.
 * Dynamic Tick Timer written by Tony Lindgren <tony@atomide.com> and
 * Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>.
 * Copyright (C) 2012 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <seminix/irq/handle.h>
#include <seminix/percpu.h>
#include <devices/irqchip.h>

DEFINE_PER_CPU(unsigned long *, irq_stack_ptr);

/* irq stack only needs to be 16 byte aligned - not IRQ_STACK_SIZE aligned. */
static DEFINE_PER_CPU_ALIGNED(unsigned long [IRQ_STACK_SIZE/sizeof(long)], irq_stack);

static __init void init_irq_stacks(void)
{
    int cpu;

    for_each_possible_cpu(cpu)
        per_cpu(irq_stack_ptr, cpu) = per_cpu(irq_stack, cpu);
}

void __init init_IRQ(void)
{
    init_irq_stacks();
    irqchip_init();
    if (!handle_arch_irq)
        panic("No interrupt controller found.");
}
